Brown recluse spider??
We can't tell the size from your photo, but it is not a brown recluse. They would have an unmarked abdomen.
They are also not found in our area.
More information can be found at this link to our Spiders in Maryland publication: http://www.extension.umd.edu/sites/default/files/_images/programs/hgic/Publications/HG9_Spiders_in_M...